Plastic compound



Patented S ept. 26, 1939 I r I p v a UNITED STATES PATENT OFFICE Silvio Pellcrano, Brooklyn, N. Y.

No Drawing. Application March 1, 199V],

, Serial N0. 128,493

6 Claims. (01. zco-zsi .The object of this invention is a plastic com- In preparing the compound I prefer to use the pound or cement for general use as such, or as ingredients in the following proportions, a binding material, putty ora sealing compound 2 to 6 parts viscous c'oumarone-indene resin where the use of such a compound is indicated, blended with 1 .to 3 parts chlorinated parafiin 5 more particularly to a compound adapted to'act and thoroughly mixed until a homogeneous mass 5 efllciently for sealing ducts or conduits such as is obtained. This is then incorporated with 1 are used for leading electric cables and wires to 5 parts asbestos fibres and 2 to parts powunderground and consists in the combination dered soapstone in a suitable mixing machine and treatments herein described. until a plastic compound is obtained. Other min- 10 Usuallyin undergroundconstruction, electriera'l fillrs may be used such as diatomaceous 10 cal cables or wires are led through conduits which earth, whiting, clay or any such material. In connect through a series of manholes and to varipresenting the above I do n'ot ,wish to be limited ous outlets or units of construction. It is essento the exact proportions stated in the specificatial that water and moisture be kept from entertion as the proportions (by weight) m y be 16 ing the conduits. A present means of closing this changed considerably in order to produce a comis to pack the end of the cable containing conduit pound having the advantageous properties dc or duct with oakum on the surface of which scribed heretofore. No specific coumarone-indene plaster of Paris or Portland cement is applied resin and no specific chlorinated paraflin is mento form a tight seal and to act as a barrier to the I tionedj it being intended that these specifications 20 entrance of any water which might have accumuare understood to cover any similar results. Any 0 lated in the manholes. This construction inof the hard grades of coumarone-indene may be volves considerable work when repairing or re-. used when softened with a heavy solvent plasmoving the wires due to the necessity of chiselticizing oil.

ing oil the cement (or plaster of Paris) which A specific example of this compound is as fol- 26 often leads to damage to the cable. A compound lows:

-is desirable which will replace this cement or 4 parts viscous coumarone-indene resin having plaster of Parisand which at the same time may a melting pointrange of 40-115 F. are blended be easily removed whenever the occasion requires. with 2 parts chlorinated paraflin and thoroughly A number of such compounds has heretofore mixed until a homogeneous mass is obtained.

30 been prepared but the present invention is a de- This is then incorporated With 3 pa t asbest'gos cided improvement over any of them. The purflbres'and 6 parts powdered soapstone in a suitpose of this invention is to prepare a cement able mixing or kneading machine until a uniwhich will adhere to any of the materials from, form plastic compound is obtained; The prowhich ducts or conduits are made, whether of portions refer to parts by weight.

asbestos-cement, glazed clay, fibre or wood or any The above composition has in a marked degree 35 mixture thereof. Such a compound should rethe properties desired for the specific us'e, being main workable through any changes of atmosimpervious to water, having adhesion to the varipheric conditions so that no chiseling is required. ous surfaces from which conduits are made, be- This compoundmust be highly waterproof anding non-corrosive and of uniform consistency 40 should be a dielectric. It is highly desirable that over changing climatic conditions, being work- 40 such compounds be noncorrosive and have no able over long periods. of time, practically nonaction on rubber, lead, cloth or any material from inflammable and in addition being an insulator which cables are manufactured. It is. also deof electricity. sirable that this compound should be fiamepr'oof I claim: I and should be tenacious and not possess cold- 1. A plastic, adhesive; cold workable non-setflow properties. My invention also comprises ting, waterproof, dielectric compound'comprising the method whereby I treat the various ingredl the combination of coumarone-indene resin and cuts in producing the plastic compound and the chlorinated paraflin together with a heavy. solsteps taken in'my process. With this and other vent plasticizing oil and inert fillers. Y Y objects inview, my invention will be described. 2. 'A plastic, adhesive, cold workable, non-set- The following is a description, it being underting, waterproof, dielectric compound comprising stood that my-method and formula contemplate by weightlapproximately 2 to 6 parts of viscous equivalent quantities when available and suitable cuomarone-indene, 11 to 3 parts of chlorinated 5 for use whenever used in the form set forth. paraffin which are blended and incorporated with soapstone.

3. A plastic, non-setting, easily workable; waterproof, dielectric compound comprising 4 parts of coumarone-indene resin having a melting point range of 40-115" F., 2 parts of chlorinated paraffin and 3 parts of short asbestos fibres and 6 parts of powdered soapstone.

4'. A plastic, non-setting waterproof dielectric composition, comprising a blend of coumaroneindene resin as an essential ingredient with chlorinated paramn, and inert fillers, said composition possessing adhesive properties and being manually workable under any changes of atmospheric conditions.

5. A plastic, non-setting, waterproof dielectric composition comprising a blend of coumarone- 2,174,164 1 to '5 parts of asbestos ilbres and 2 to 10 parts of indene resin as an essential ingredient with chlorinated paraflin and with asbestos and soapstone as mineral fillers, said composition retaining its plasticity and being workable under extreme's of atmospheric conditions and being flame proof.

6. An adhesive plastic, composition for use in SILVIO mpnnmo. 

